Effect of Biochar and Waste Water Irrigation on Crop Production in Urban Horticulture of Tamale, Ghana
Edmund Kyei Akoto-Danso1, Delphine Manka'abusi1, Steffen Werner2, Volker Häring2, Christoph Steiner1, George Nyarko3, Pay Drechsel4, Andreas Buerkert1
1University of Kassel, Organic Plant Production and Agroecosystems Research in the Tropics and Subtropics, Germany
Little is known about the effects of biochar in waste water irrigated urban vegetable production of West Africa. We therefore established a two-year field experiment comprising 12 crops in Tamale, Ghana, on an area underlain by a petroplinthic combisol. A split block design with four treatments (Farmer Practice (FP), FP + biochar, biochar, and an unfertilised control) were factorially combined with two water qualities (clean water and untreated waste water) and two water quantities (usual irrigation quantity and two-thirds of the usual volume). The 16 treatment combinations were replicated four times on plots of 8 m2. At the onset of the experiment, rice husk biochar was applied at a rate of 20 t ha-1 at 0-20 cm depth.
Keywords: Biochar, Ghana, Tamale, waste water
Contact Address: Edmund Kyei Akoto-Danso, University of Kassel, Organic Plant Production and Agroecosystems Research in the Tropics and Subtropics, Steinstr. 19, 37213 Witzenhausen, Germany, e-mail: Kydanso07yahoo.com